﻿of North America. 13 



parenthesis after A. caespiticius in the place cited, but an examin- 

 ation of the Austin collection, so generously loaned by Mr. 

 Pearson, showed the manuscript diagnosis of A. Torreyi affixed to 

 a scrap of the Corsican plant (which we refer to Anthoceros dichot- 

 omus Raddi) and that plant alone alluded to at the close of the 

 description. A. Torreyi 



MS 

 phymatodes. Bolander's specimen is ac- 

 companied by a slip of brown paper on which is written — evi- 

 dently by himself — " Oakland on slides near the bay," but it is 

 found in the Austin collection glued to Austin's manuscript de- 

 scription of A. Lescurii from New Orleans, the evident type of 

 which appears in the same collection under the name of A. 



Ludovicianus. 



Anthoceros phymatodes is a near ally of A. dichotomus Raddi, 

 specimens of which from Raddi's herbarium we have had the 

 privilege of examining through the kindness of Professor Massa- 

 longo, as well as specimens from Portugal and Italy, obligingly 

 communicated by Herr Stephani. But A. dichotomns has a costa 



the width of the segment, 6-IO cells thick, the lamina 



mostly 2-stratose, involucre .7-1 mm. wide, often enlarged at the 

 irregularly 2-4-lobed mouth ; while A. phymatodes has a costa 

 L-l the width of the segment, 10-16 cells thick, the marginal 



3 3 



lamina 5-3-stratose, involucre .5-.6 mm. wide, not expanded at 

 the entire or repand mouth. To facilitate further comparison, 

 when the mature sporogonia are found, it may be added that in 

 A. dichoiomus from Raddi's herbarium (" Anthoceros polymorphic 

 Raddi y dichotomns Raddi" is the legend the packet bears) the 



capsules are erect or slightly curved, 7.5-15 mm - lon g» often 

 thickened toward the apex, spores yellow, becoming yellowish- 

 brown, rounded-tetrahedral, almost wholly smooth on all faces, 

 42-60 ft in maximum diameter, pseudo-elaters yellowish, of 1-4 

 irregular elongated cells, geniculate, variously contorted, often 



branched. 



Anthoceros caespiticius DeNot, the probable original of which 

 (from the vicinity of Cagliari, in southern Sardinia), we have been 

 allowed to study through the indulgence of Professor Pirotta, is not 

 closely related to A. dichotomns, with which it was compared by 



its author. 



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